LONDON (Reuters) – Britain’s Prince William and his wife Catherine are expecting a baby, destined to be the country’s future monarch, the prince’s office said on Monday. “Their Royal Highnesses The Duke and Duchess of Cambridge are very pleased to announce that The Duchess of Cambridge is expecting a baby,” the office said in a statement. “The Queen, The Duke of Edinburgh, The Prince of Wales, The Duchess of Cornwall and Prince Harry and members of both families are delighted with the news. …